Fig. 1: Preparation and characterization of large-area phosphorene flakes.
From: Large-area phosphorene for stable carbon-based perovskite solar cells
a Schematic illustration of the electrochemical production of eBP. SEM images of b bulk and c expanded BP prepared using −1 mA (scale bar: 10 μm). d UV-vis spectrum of eBP dispersion (concentration: 0.083 mg mL−1). e HR P 2p spectra and f Raman spectra of bulk BP and eBP. g AFM image of eBP flakes (scale bar: 1 μm).
